#include <iostream>
using namespace std;
int main ()
{
    int i;
    int cont;
    string cadena;
    cin>>cadena;
    i=0;
    cont=0;
    while(i<cadena.length())
    {
        if(cadena[i]=='a'||cadena[i]=='e'||cadena[i]=='i'||cadena[i]=='o'||cadena[i]=='u')
        {
            cont++;
        }
        i++;
    }
    cout<<cont;
}
